my Co-Founder and I are doing https://counter.dev/ . The one-sentence pitch: Like Google Analytics but privacy friendly and also free. We are serving like 10 active users, it's pay what you want and we are very happy about our 5 dollar donation so far.
There is some technical blah blah blah on the GitHub page of the project describing how the service can be Free in a sustainable way. We are doing a major design replacement. I won't bother you with our glorious technical details :-) So far we are two: A Designer, that actually implements his designs very well, he's a product enthusiast based in Kyiv. And the other person (me) is a Senior Backend Developer based in Berlin. Both already have done projects like this.
So of course we have no idea about marketing. We need someone that gets us more users. Maybe content marketing or really whatever you want to come up with. We are literally putting the project in your hands and looking for somebody to push this forward. You should have an opinion on how to phrase things in the landing pages and which features to praise.
Do we intent to want to pay ourselves with this project at some time? Yes, of course. I think this market is interesting because there are a lot of webpages on the internet, I guess most want some kind of analytics. With privacy friendly alternatives becoming more and more relevant (I assume), we are the only free and privacy friendly service there is - please correct me if you know some service that refutes that last statement.
So yeah, let's have fun, let's work, let's build the best web analytics product in our niche and be happy - approach us :-)